<template>
  <div class="tmpl">
    <h1>Forms</h1>
    <el-form :model="ruleForm2" status-icon :rules="rules2" ref="ruleForm2" label-width="100px" class="demo-ruleForm">
      <el-form-item label="密码" prop="pass">
        <el-input type="password" v-model="ruleForm2.pass" autocomplete="off"></el-input>
      </el-form-item>
      <el-form-item label="确认密码" prop="checkPass">
        <el-input type="password" v-model="ruleForm2.checkPass" autocomplete="off"></el-input>
      </el-form-item>
      <el-form-item label="年龄" prop="age">
        <el-input v-model.number="ruleForm2.age"></el-input>
      </el-form-item>
      <el-form-item label="数量" prop="num">
        <el-input v-model.number="ruleForm2.num"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="submitForm('ruleForm2')">提交</el-button>
        <el-button @click="resetForm('ruleForm2')">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  name: 'Forms',
  data () {
    var checkAge = (rule, value, callback) => {
      if (!value) {
        return callback(new Error('年龄不能为空'))
      }
      setTimeout(() => {
        if (!Number.isInteger(value)) {
          callback(new Error('请输入数字值'))
        } else {
          if (value < 18) {
            callback(new Error('必须年满18岁'))
          } else {
            callback()
          }
        }
      }, 800)
    }
    var checkNum = (rule, value, callback) => {
      if (!value && value !== 0) {
        console.log(value)
        return callback(new Error('数量不能为空'))
      }
      setTimeout(() => {
        if (!Number.isInteger(value)) {
          callback(new Error('请输入数字值'))
        } else {
          if (value < 0) {
            callback(new Error('数量不得为负数'))
          } else {
            callback()
          }
        }
      }, 800)
    }
    var validatePass = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请输入密码'))
      } else {
        if (this.ruleForm2.checkPass !== '') {
          this.$refs.ruleForm2.validateField('checkPass')
        }
        callback()
      }
    }
    var validatePass2 = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请再次输入密码'))
      } else if (value !== this.ruleForm2.pass) {
        callback(new Error('两次输入密码不一致!'))
      } else {
        callback()
      }
    }
    return {
      ruleForm2: {
        pass: '',
        checkPass: '',
        age: '',
        num: ''
      },
      rules2: {
        pass: [
          { validator: validatePass, trigger: 'blur' }
        ],
        checkPass: [
          { validator: validatePass2, trigger: 'blur' }
        ],
        age: [
          { validator: checkAge, trigger: 'blur' }
        ],
        num: [
          { validator: checkNum, trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    submitForm (formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          let pass = this.ruleForm2.checkPass
          let age = this.ruleForm2.age
          let num = this.ruleForm2.num
          alert(`密码：${pass},年龄：${age},数量：${num}`)
        } else {
          alert('error submit!')
          return false
        }
      })
    },
    resetForm (formName) {
      this.$refs[formName].resetFields()
    }
  }
}
</script>

<style scoped>
h1 {
  font-weight: normal;
}
.demo-ruleForm {
  width: 500px;
}
</style>
